On Fri, 11 Apr 2025 21:28:30 GMT, Valerie Peng <valer...@openjdk.org> wrote:
>> Martin Balao has updated the pull request incrementally with two additional >> commits since the last revision: >> >> - Algorithm and key size checking before derivation. Mechanism >> normalization for TLS. >> - Minor import adjustment. > > src/jdk.crypto.cryptoki/share/classes/sun/security/pkcs11/P11HKDF.java line > 246: > >> 244: alg.equalsIgnoreCase("Generic")) { >> 245: return ki.keyType; >> 246: } > > What is this check for? It's not immediately clear to me why do we look up > the keyInfo using `alg` but then again to check to error out when the found > keyType is CKK_GENERIC_SECRET && alg not equals "Generic". This seems to > directly contradicts the special workaround for "TlsXXX" in my other PR? For the TlsXXX issue I check the pseudo-mechanism. That works if all algorithms are known to the map. I'll check how many we have and see what are the pros/cons of having them in the map. I prefer symmetric key algorithms to be in the map. The reason for the check you referred is to block deriving keys such as HmacSHA256, PBEWithHmacSHA224AndAES_256, etc. which are not the result of HKDF derivations, but of Mac and PBE derivation. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/24526#discussion_r2040428987